POSSu25-0.5

For tinning and soldering of radiators. Alloy malosurmyanisty recommended for soldering of zinc and galvanized parts

Classification

Country Section Category
CIS, Russia, Ukraine Tin, lead, babity Tin-lead solder

Chemical composition

Standard Fe, % Sn, % Bi, % Cu, % Zn, % Ni, % Sb, % Al, % Pb, % As, % S, %
GOST 21930-76 < 0.02 24–26 < 0.2 < 0.05 < 0.002 < 0.02 0.05–0.5 < 0.002 73.366–75.95 < 0.02 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C \rho, \frac{kg}{m^3} R\cdot 10^{-6}, \Omega\cdot m
20 10000 0.182

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \epsilon_L, % KCU\cdot 10^{3}, \frac{J}{m^2} Treatment
Alloy GOST 21930-76 36 45 390

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Alloy GOST 21930-76 136

Casting and technological parameters

melting point, solidus, °C melting point, liquidus, °C
183 266

Standards

Standard Description
GOST 21930-76

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Sn % Tin
Bi % Bismuth
Cu % Copper
Zn % Zinc
Ni % Nickel
Sb % Antimony
Al % Aluminium
Pb % Lead
As % Arsenic
S % Sulfur

Description of physical characteristics

Parameter Units of measurement Description
\rho \frac{kg}{m^3} The density of the material
R\cdot 10^{-6} \Omega\cdot m Electrical resistivity

Description of mechanical properties

Parameter Units of measurement Description
\sigma _{U} MPa Ultimate tensile strength
\epsilon_L % Elongation at break (longitudinal)
KCU\cdot 10^{3} \frac{J}{m^2} Impact toughness

Description of the casting and technological parameters

Parameter Units of measurement Description
melting point, solidus °C The temperature at which melts the low melting component
melting point, liquidus °C The temperature at which equilibrium falls first crystal